No audio output Android 15 (Google Pixel Tablet) to Windows 11

[ssmkx]

Environment

• **OS:Windows11 23H2 Build 22631.4602
• **Scrcpy version:3.1
• **Installation method:Windows release
• **Device model:Google pixel tablet
• **Android version: android version 15

Describe the bug

The screen is displayed on the Windows.
But, there is no sound.
Android can be operated normally from Windows. But no sound.
I have tried various changes to codecs and buffer values, but cannot figure out the cause.

And Tried on a Google Pixel 6a (android15) to isolate that it was a Windows 11 configuration issue.
As a result, the video was displayed correctly in Windows and the audio played correctly on Windows.

Attach the operation log.（example.txt）
This is the result of ”scrcpy --verbosity=verbose" execution on pixel tablet.

How can this be resolved?

example.txt

[rom1v]

If you record (scrcpy --record=file.mp4 and play the file with VLC, Firefox or Chrome, is there audio?

Does --audio-output-buffer=10 (or 15) change anything?

[ssmkx]

Tried recording, but no audio. (Played on VLC.)
and
Tried "--audio-output-buffer=10", Still no sound.

[rom1v]

Is audio played on the device? If so, the audio capture does not work on the device system.

Also try with --audio-dup.

[rom1v]

And Tried on a Google Pixel 6a (android15) to isolate that it was a Windows 11 configuration issue.
As a result, the video was displayed correctly in Windows and the audio played correctly on Windows.

So on a pixel 6a, audio works, so it is NOT "a Windows 11 configuration issue".

On your device, how is the device volume? (Alt+up Alt+down to adjust).

[ssmkx]

Tried "--audio-dup" , The pixel tablet outputs sound from the device speakers, but there is no sound on windows.

It is possible to control the volume with shortcut keys　(Alt+up Alt+down ) .
When I tried “--audio-dup”, the pixel tablet volume can be adjusted using shortcut keys, and I can see the volume bar change on the screen.
But, there is no sound on Windows.

[snakagawa]

I am experiencing the same problem.

• Device: Google Pixel Tablet
• Android version: 15
• Android Security Update Version: 12/15/2024
• Scrcpy version: v2.7

The sound was working fine until just before, but after a security update for Android 15 and rebooting, the sound stopped working.

I updated the version of Scrcpy to the latest 3.1 just to be sure, but still no sound.

Since the sound stopped working after the security update,
I am assuming that some change on the Android side is causing the sound to stop working.

I hope this information will help you to solve the problem.

[rom1v]

Does mic work?

scrcpy --audio-source=mic

[ssmkx]

"scrcpy --audio-source=mic" is work! Sound was output from windows.

Then a solution was discovered.
One way to solve this problem is to set "access to the microphone" to "Allow".
It can be set from Android Quick Settings.

Let me explain how it happened.
The premise is that the Pixel Tablet can be configured to "block” access to the microphone.
Before running scrcpy“--audio-source=mic”,
I set ”access to the microphone" to “allow”, the audio from the pixel tablet was output to windows.
In other words, when "access to the microphone" set “block” is selected, no sound on Windows.
It seems that this problem is on the Pixel Tablet side.

I can't guess the root cause, but it has been resolved for now.
Thank you for your support!

[rom1v]

Oh, I can reproduce on a Pixel 8, if I disable microphone access.

Btw, if I start with microphone access enabled, then disable it, the audio capture still works.
However, if I start with microphone access disabled, then enable it, it does not work. It must be enabled on start.

[rom1v]

I reported here: https://issuetracker.google.com/issues/385460374